Merge ImportOptionManager with ActionService

ImportOptionManager allow to map a dropzone category (ContentView, Clipboard ...) to a list of (operationId, label, decription).
In addition we need to filter according to security and context.

This is very close to what already exists inside the Action Service.

So we could remove the ImportActionManager and only use the ActionService.
Expected gains are :

• leverage existing filter system

• leverage override / enable system

• Make the automation operation that exposes the ImportOptions more generic